Engine: Head Chatter Marks

[T-CAB]

Going through some old parts tryig to decide which to junk or keep. I have a 6-cyl OHV head the does not appear to have any cracks, but has some chatter marks on the side opposite the park plug on one cyl. Can this head be used again if the rough areas were ground out, or would that change the compression too much for the one cyl.?

Thanks

T-cab

[christophe]

Seems still usable to me. You should have to CC the head after surfacing to be on the safe side, but I'm quite sure the good old six won't notice the difference. If we were in the same area, I would have bought it.

[r1lark]

I have a 6-cyl OHV head the does not appear to have any cracks
Thanks T-cab

If you haven't already, first thing will be to get it checked for cracks using either dry mag or wet flourescent. Visual inspection is not sufficient....by the time they get big enough to see with the naked eye, they are really bad.

[Mike Van Veghten]

Agreed, "visually" it looks fine.
But have it hot water pressure checked. Magnafluxing woun't work with that surface roughness. It will show up as bad.

They aren't chatter marks, it's either water damage or just a casting flaw.

Mike

[PackardV8]

Agreed, "visually" it looks fine.
But have it hot water pressure checked. Magnafluxing woun't work with that surface roughness. It will show up as bad.

They aren't chatter marks, it's either water damage or just a casting flaw.

Mike

Agree with the previous advice. If it were mine, I'd have the head pressure tested and if it passes, run it through the shot blaster to remove the rust and mill just enough to clean the gasket surface.

The third possibility for those marks is detonation. Usually, if an engine had detonated sufficiently to damage the head, it has eaten up the piston long before. However, I've seen some Studes driven with a hole in the piston top.

jack vines